// app.js
App({
  onLaunch: function () {
    // 调用API从本地缓存中获取数据
    // var logs = wx.getStorageSync( 'logs' ) || []
    // logs.unshift( Date.now() )
    // wx.setStorageSync( 'logs', logs )
  },
  getUserInfo: function (cb) {
    var that = this
    if (this.globalData.userInfo) {
      typeof cb == 'function' && cb(this.globalData.userInfo)
    } else {
      // 调用登录接口
      wx.login({
        success: function () {
          wx.getUserInfo({
            success: function (res) {
              that.globalData.userInfo = res.userInfo
              typeof cb == 'function' && cb(that.globalData.userInfo)
            }
          })
        }
      })
    }
  },
  globalData: {
    userInfo: null
  }
})
